Gatiss - who is known as well for his work on Doctor Who - also joked about coping with the devoted fanbase the fantasy drama has amassed.

"My life is entirely composed of fan obsession - so this is just another one to add to it," he said.

"It's all a Venn diagram."

Gatiss has attended this year's Comic-Con event in San Diego to promote the third series of Sherlock, but could potentially make a cameo at the Game of Thrones panel due to take place later today (July 19).